4-Amino-5-hydroxy-6-((2-methoxy-5-methyl-4-((2-(sulphooxy)ethyl)sulphonyl)phenyl)azo)-3-((4-((2-(sulphooxy)ethyl)sulphonyl)phenyl)azo)naphthalene-2,7-disulphonic acid 85959-30-4 EINECS 289-022-1